Er,Cr:Glass/Er,Cr,Yb:Glass


  • Rod Diameters: up to 15 mm
  • Diameter Tolerance: +0.0000 / -0.0020 in
  • Length  Tolerance: +0.040 / -0.000 in
  • Tilt / Wedge Angle: ±5 min
  • Chamfer: 0.005 ±0.003 in
  • Chamfer Angle: 45 deg ±5 deg
  • Product Detail

    Technical parameters

    Erbium and ytterbium co-doped phosphate glass has a broad application because of the excellent properties. Mostly, it is the best glass material for 1.54μm laser due to its eye safe wavelength of 1540 nm and high transmission through atmosphere. It's also suitable for medical applications where the need for eye protection may be difficult to manage or diminish or hinder essential visual observation. Recently it is used in optical fiber communication instead of EDFA for its more super plus. There is a great progress in this field.
    Erbium Glass doped with Er 3+ and Yb 3+ and suited to applications involving high repetition rates (1 - 6 Hz) and being pumped with 1535 nm laser diodes. This glass is available with high levels of Erbium (up to 1.7%).
    Erbium Glass doped with Er 3+, Yb 3+ and Cr 3+ and suited to applications involving xenon lamp pumping. This glass is often used in laser range finder (LRF) applications.

    Basic Properties:

    Item Units EAT14 Cr14
    Transformation Temperature ºC 556 455
    Softening Temperature ºC 605 493
    Coeff. of Linear Thermal Expansion (20~100ºC) 10‾⁷/ºC 87 103
    Thermal Conductivity (@ 25ºC) W/m. ºK 0.7 0.7
    Chemical Durability (@100ºC weigh loss rate distilled water)   ug/hr.cm2 52 103
    Density g/cm2 3.06 3.1
    Laser Wavelength Peak nm 1535 1535
    Cross-section for Stimulated Emission 10‾²º cm² 0.8 0.8
    Fluorescent Lifetime ms 7.7-8.0 7.7-8.0
    Refractive Index (nD) @ 589 nm   1.532 1.539
    Refractive Index (nD) @ 589 nm   1.524 1.53
    dn/dT (20~100ºC) 10‾⁶/ºC -1.72 -5.2
    Thermal Coeff. of Optical Path Length (20~100ºC) 10‾⁷/ºC 29 3.6

    Standard Doping

    Variants Er 3+ Yb 3+ Cr 3+
    Er:Yb:Cr:Glass 0.13×10^20/cm3 12.3×10^20/cm3 0.15×10^20/cm3
    Er:Yb:Glass 1.3×10^20/cm3 10×10^20/cm3